Set 75978
Diagon Alley
Retired Sep 2025Retail price$449.99What LEGO charged
Worth now$515.02Based on 19 recent sealed sales
Asking now$600.00Typical price on 31 eBay listings
vs retail+14%Worth more than it cost
Flat since retirement
Still trading near its $450 retail price. Retirement alone hasn't moved it.
How much is LEGO 75978 Diagon Alley worth?
LEGO 75978 Diagon Alley is worth about $515.02 sealed right now, based on 19 recent sealed sales. That's 14% above its $449.99 retail price. It came out in 2020 with 5,548 pieces and 17 minifigures. It was retired in Sep 2025. Over the last 83 days its typical asking price has risen 4%, from $575.99 to $600.00. We last checked it 8 days ago.
Price history
Value history
Oct 19$60031 listings
- Lowest
- $576
- Highest
- $615
- Change
- +4%
- Asking vs retail
- +33%
26 observations · median asking · rechecked 8× daily
Should you buy it?
Sellers want $600, but it’s actually been going for $515. Offer low.
If you bought it to resell
Sells sealed for$515
Marketplace fees · 15.25%−$79
Payment processing · 2.9% + $0.30−$17
Shipping · est. from 5,548 pieces−$45
Reaches you$375
Pay no more than$288
For a 30% return at your costs. Change them and every figure on the site follows.
What it actually sold for
Sealed
$515
19 sold in six months · $421–$575Used
$341
7 sold in six monthsSellers are asking 17% more than buyers actually paid. The $600 figure above is a ceiling; this is the floor to negotiate toward.
Completed BrickLink transactions over the last six months. Real sales, not asking prices.
Worth more in pieces?
Parted out$749vsSealed$515
Parting it out is worth about 45% more than selling it sealed — that gap is why this set gets broken.
- Minifigures
- $119
- Loose parts
- 5,733 pieces
Minifigure prices are real completed BrickLink sales. The parts figure is an estimate — the set’s own inventory at the catalogue average, not each piece priced individually. Treat it as a guide, and remember parting out is hours of work and many small sales.
Set details
- Set number
- 75978
- Theme
- Harry Potter
- Released
- 2020
- Status
- Retired Sep 2025
- Pieces
- 5,548
- Minifigures
- 17
- Retail price
- $449.99
- Value per piece
- $0.108
- Price confidence
- high · 31 listings
- Last checked
- 8 days ago
Where these numbers come from
eBay31 live listingsThe asking price here — the median of what sellers want right now, $600. Last checked Oct 19.See the listings →BrickLink19 completed salesWhat it actually sold for — $515 across six months of real transactions. Last checked Oct 23.Open the price guide →Catalogue5,548 piecesPiece counts, minifigures, release year and retail price come from Rebrickable and Brickset. Retail was $450.See the catalogue entry →
eBay links are affiliate links — if you buy after clicking, we earn a small commission at no cost to you, and that is what pays for the site. BrickLink has no such programme, so those are plain links. Neither changes what we show or what we say about it.
How to read this. The value is the median of live sealed listings, after removing instructions, empty boxes, used sets, multi-set lots and implausible outliers. Real sale prices usually land below asking, so the buy-below figure is deliberately the conservative end of the range.
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